Improvement in water-coolers



` UNITED STATES PATENT OEEreE.

WILLIAM F. GARBISON, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN WATER-COOLERS.

Specication forming part of Letters Patent No. 158,269, dated December 29, 1874; application led October 9, 1874.

To all whom it may concern;

Beit known that I, WILLIAM F. GARRIsoN, of the city of Brooklyn, in the county of Kings and State of New York, have invented certain Improvements in Apparatus for Cooling Water and other liquids, of which the following is a specification This invention consists in a novel construction of apparatus for cooling water or other liquids by the well-known process of evaporation n cacao, or under a pressure less than the atmosphere, whereby great simplicity and eiciency are attained, and great convenience is ai'orded for cooling water tor drinking and other purposes.l

The apparatus is especially uset'ul for cooling water in factories or buildings having a surpluspower sufficient to work an air-pump to effect the necessary evaporation; but any known means of obtaining1 vacuums, as a steam-jet or a descending column of Water, maybe substituted for the air-pump. The apparatus may also be employed to manufacture ice; but such itis unnecessary to describe here.

In the drawing, Figure l represents a vertical section of my improved Water or other liquid cooler, and Fig. 2 a horizontal section of the same, mainly on line w x.

A is the outer case of the cooler, constructed to receive within it the cooling-chamber B and pipes and other appurtenances connected therewith 5 likewise to collect all drip or leakage that may occur. Said cooling-chamber may be surrounded by an air-space, b, or packing-space, for charcoal or other non-conductor of heat, and is supplied with water or other liquid from any suitable source bya pipe, C, through the top of the cooler, and in communication below wit-h a chamber, D. This chamber connects above and below, by passage e f, with the cooling-chamber B. and contains within it a loose iloat, E, which is furnished with a valve, d, that, whenever the water supplied by the chamber l) reaches its maximum, or is in excess in the cooling-cham ber B-that is, stands at or above the level of the top passage c-closes the inlet O, said valve, by its attached float, opening again to admit a further supply of water whenever the level of the latter in the coolingchamber B approaches or reaches a lower level than it should stand at in the cooling-chamber. In this way the cooling-chamber B may be automatically supplied with cooling water or liquid in an adequate quantity, at all times, to insure a proper action and to keep the Worm G fully or properly immersed.. This worm, which has its inlet at g, and its outlet tap or cock at It, is arranged within the cooling-chamber B and contains the. water or other liquid to be cooled by evaporation of or from the water or liquid in the chamber B, and, by its great and prolonged exposure ofthe liquid to be cooled, is of more than ordinary importance in a cooler ot' this description.

- The air is exhausted from the upper space of the chamber B above the level of the water or liquid therein, and the vapor resulting from evaporation of the Water is drawn oi' by a pump, by or through a pipe, H, so that a rapid reduction of the temperature of the water in the coolin g-chamber B, and, through the latter, in the/worin G, takes place.

Another pipe, J which, like the pipes G and H, passes through the top or cover of the outer case A, is projected down Within the cooliu-gchamber B and serves to admit a forced current of air within the water in the chamber B, the air entering said water near its bottom and circulating among and bubbling up through it, and serving as a vehicle to caary oi` the vapor of the water, and also as a means ot' agitating the water and facilivtating its evaporation. This greatly .assists the evaporation and expedites the cooling of thewater; but care should be taken that` the supplymot airby the pipe J is limto"detrimentally reduce the vacuumor increasewthepressure within the chamber B.

A gage, b, capable of inspeztion from the exterior of the apparatus, may be connected with the cooling-chamber B, to indicate the level of the water therein.

In case ,it may be desired to use the cooled lliquid contained in the vessel B, the said liquid `may Joe drawn oft' by a pump, or may be allowed to run 0H through an elongated pipe by gravitation, provided, in the latter case, it be placed high enough for the weight ofthe column in the said pipe to overcome the chamber D, the exhaust-pipe H, and

the vacuum in the saidvessel. air-inlet pipe J, substantially as and for the I claimpurpose described. The casing A having the chamber D pro- WM. F. GARRISON. vided with the valve d and oat E, in combi- Witnesses: nation With the chamber B having the worm HENRY T. BROWN, G and passages e and f communicating with MICHAEL RYAN, 

